Nut and bolt tightening device.



' 1. M. MURRAY.

NUT AND BOLT TIGHTENING DEVICE APPLICATION FILED JULY 10. I918.

Patented Jan. 7,1919.-

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i. M. MURRAY.

NUT AND sou TIGHTENING DEVICE.

APPLICATION FILED IULY 10,1918. 1; 98,296 Patented Jim. 7,1919.

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JOHN MARSHALL MURRA or PHILADELPHIA, rnnnsvtvanm.

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To all whom it may concern:

Be it known that I, JOHN M. MURRAY, a citizen of the United States, residing at PhiL adelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Nut and .Bolt Tightening Devices, of which the following is a specification.

One ob'ect of my invention is to provide a device for tighteningnuts and bolts which are located in places Where itisimpossible to secure good leverage with ordinary wrenches. For example, my invention. is well adapted for use in tightening nuts and bolts on the bottoms of ships where there is usually a great number oi bolts and the working space is extremely limited. 1 I

Another object is to so construct thedevice of my invention that it can be quickly positioned and operated, a n y i A further object is to make thedevice of my invention of a simple and durable construction. l a

These objects; and other advantageous endswhich will be described hereinafter, I attain in the following-manner, reference being had to the. accompanying drawings in -whichu H r J Figure 1 is a front elevationof my invention, i

. Fi and its associated parts being shown in outside elevation, a

Fig. 3 is a top plan view of my invention,

Fig, 4% is a transversesectiontaken on the fine t-4: of Fig.2, a

Fig. 5 is a diagrammatic elevation showing how my invention is adapted for use for tightening bolts on the bottom ofa ship,

Fig. 6 is a fragmentary perspective view showing a slight modification-ofaf portion of my invention, and

Fig. 7 is a fragmentary sectional elevation showing a modification in the construction of certain other features of my invention.

Referring to Figs. 1 to 5, inclusive, my invention includes a wedge block 8 having a shoe plate 9 on its upper surface, said wedge being provided with an upright stud 10 which fits within the lower end of a tube or pipe 11. The tube or pipe 11 forms a standard which is rotatably mounted on the stud 10 and at its upper end provides a hearing for a lever 12 illustrated in the form of a wheel. This wheel is preferably made with its spokes 13 extending at an angle down- "Specification of Letters Patent.

The; advantage lever rodldextendang at an angle is obtated on the stud 1 0'.

Patentgd Jan. *7, 1919.

Application filed. July 10, 1915. Serial No. 2144,1 34.

wardly from the 14: so that the rim 15 of the wheel is in a lower horizontal plane than the horizontal plane which includes the junctionof the spokes with the hub. This permitsian auxiliary lever rod 16 to be inserted between the spokes at a comparatively slight angle .to the horizontal. This, auxiliary lever rodis illustratedin dot-and-dash lines at 16 1n.Fig..2 of the drawing. K

of having the auxiliary viously to keep the lever rod at a comparatively low level so as to permit itto be easily manipulated.

A Wrench 17 includes an angular nut-engaging head 18, and a stem 19. This stein has a portion 20, angular n .cross section,

which fits an angular hole in the hub 14: of the wheel 12. Another portion 21 of the stem 19 fits within the upper end of the tube or pipe 11 and a key pin 22 extends through the pipe 11 and through a hole 23 in the portion 21 of the stem .19. It will thus be noted that the wheel 12. is positively connected to the wrench 17 andto the standard 11 so that by rotating the wheel 12 the wrenchwillbe rotated and the standard 12 will be also ro- The Wrench head 18 is preferably made i y y, r y y with an opening as shown at 2& so that when g. 2 is a sectional elevation; the wrench the wrench is appliedto a nut the operator can see the nut through the opening 24;. As

illustrated in Fig. 5, 25 represents the bottom of a boat or ship havingnuts 26 to be tightened, and 27 represents the baseorsupporting structure.

ing the wheel 12 the nuts will be tightened.

The block 8 can be kicked into position by the workmen so that the standard 11 will occupy a substantially upright position irrespective of the slight angle of the bottom of the boat and the base 27. The loose connection between the stud 10 and the standard 11 will permit rotation of the standard and wrench and if desired the shoe plate 9 can be moved into difierent positions throughout the length of the wedge to increase or decrease the distance between the wrench head and the base 27.

In Figs. 1 to 5, inclusive, I have illustrated the shoe plate 9 secured to the block by lag screws 29. However, it will be understood that any suitable securing mechanism can be employed.

In Fig. 6 I have illustrated a wedge block 30 upon which is sildable a shoe plate 31, said wedge block and shoe plate corresponding in function to the wedge block 8 and shoe plate 9, above described. However, in Fig. 6, the wedge block is provided'with a top flange 32 and the shoe plate is provided with inwardly bent ears 33.

In this instance also the shoe plate 31 is provided with a stud 31 which is adapted to fit within the standard 11. It will thusbe seen that, with the construction shown in Fig. 6 by holding the standard 11 and by kicking the wedge block 30, the standard 11 will be raised or lowered according to the direction of movement of the wedge block. If desired, the wedge block can be provided with a series of holes 35 and a movable pin 36 can be employed to support the shoe 31 in various positions so as not to accidentally slide down the incline of the wedge after once being set.

In Fig. 7, instead of having the wrench stem extending entirelyvinto the standard 11, I provide the wheel l2 with a stem 21 which fits within the standard, and a key 22 is provided to lock the stem 21 to the standard. 11. In this construction the stem 19 of the wrench 17 has its angular portion 20 fitting within the hub of the wheel .12 but does not extend entirely through said hub as in the construction illustrated in Figs. 1 to 4, inclusive.

By the use of my invention a workman can efliciently tighten a great many more nuts or bolts than with an ordinary wrench, and at the same time his work is easier since it is very tiresome to stand in a comparatively small space and in a cramped position as was necessary prior to the construction of my invention.

7 While I have described my invention as taking a particular form, it will be under- 7 stood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth,

but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claimas new and desire to secure by Letters Patent is:

1. A device of the character described including a standard, a wrench at the top of the standard and in longitudinal alineinent with the standard, means forming a rotatable support for the bottom of said standard, and a lever operatively connected to said wrench and standard, substantially as described.

2. A device of the character described including a standard, a wrench at the top of the standard, a block, a shoe on the block having a rotatable connection with said standard, and a lever interposed. between said wrench and said block whereby, when the lever is rotated, the wrench will be rotated and the standard will also be rotated on said connection, substantially as described.

3. A device of the character described including a standard, a wrench at the top of said standard, a block, a shoe on the block having a stud rotatably fittingthe lower end of said standard, and a lever interposed between said wrench and said block, substantially as described.

4. A device of the character described including a standard, a wrench at the top of the standard, a wedge block, a shoe mounted on said wedge block and supporting said standard, and a lever operatively connected to said wrench, substantially as described.

5. A device of the character described including a tubular standard, a, wrench mounted above said standard, a lever operatively connected to the wrench and to said standard, a block, and means for supporting said standard on the block, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN MARSHALL MURRAY.

Witnesses:

CHAS. E. Por'rs, MARY A. INGLOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 10.0." 

